An estimated 700 guests attended the ceremony and 1,200 attended the reception that followed at Hammersmith Farm.
Auchincloss was born at Hammersmith Farm in Newport, Rhode Island.
Since 1978, Camelot Gardens has operated Hammersmith Farm as a museum, with a $7 admission price.
It is booked nearly every summer weekend for wedding receptions, said Linda Michaud, director of special events for Hammersmith Farm.
He received his commission from President Kennedy on September 29 in a ceremony held at Hammersmith Farm, the home of Kennedy's mother-in-law.
They were married Sept. 12, 1953, at Hammersmith Farm in Newport.
During his presidency, Kennedy spent enough time at Hammersmith Farm that it was referred to as the "Summer White House".
Their reception was held at Hammersmith Farm, the Bouvier summer home in Newport.
This ha-ha was constructed so as to be completely invisible to the occupants of Hammersmith Farm.
The reception for 1,200 was held at Hammersmith Farm, the estate of the bride's family.